“We thought out ancient central heating system had had it, but power flushing it seems to have given it a new lease of life” – Brenda Tucker, Kensington, London

“The radiators had cold spots, we had to turn the heating right up to get any decent heat out of them. Power Flushing sorted this out.” – Mrs Harrison, Marylebone, London

“I should have gotten the power flushing done sooner – it has made such a difference to my central heating system. The house heats up much faster and the boiler has not cut out since the treatment” – Mr Hopkins, Notting Hill, London